Right, so the battery's your bottleneck here. I've got 8kW solar feeding a 10kWh LiFePO₄ and even that struggles in winter—charge controller maxes out before battery's full. Summer?
Solid upgrade. I went Fogstar 200Ah for the garden office last year and the difference is mental — no more voltage sag when the kettle and charger are running simultaneously.
@AnneOliver, yeah...
Spot on about usage patterns. I've got LiFePO4 running my EV charging setup and it's made a real difference — the depth of discharge flexibility means I'm actually using the capacity I've paid...
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